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Topic

Technologies and technical equipment for agriculture and food industry

Volume

Volume 70 / No. 2 / 2023

Pages : 299-308

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DEM COMPUTATIONAL SIMULATION OF THE POLISHING OF THE TAGUA (PHYTELEPHAS AEQUATORIALIS) PALM NUTS

SIMULACIÓN COMPUTACIONAL EN MED DEL PULIDO DE LAS NUECES DE PALMA DE TAGUA (PHYTELEPHAS AEQUATORIALIS)

DOI : https://doi.org/10.35633/inmateh-70-29

Authors

(*) Carlos MONTES-RODRÍGUEZ

Technical University of Manabi, Institute of Admission and Leveling, Department of Career Leveling

Miguel HERRERA-SUÁREZ

Technical University of Manabi, Faculty of Mathematical, Physical and Chemical Sciences, Department of Mechanics

María María LÓPEZ-ZAMORA

Educational Unit Paulo Emilio Macías, Department of Mathematics and Statistics

Julio Julio PÉREZ-GUERRERO2

Technical University of Manabi, Faculty of Mathematical, Physical and Chemical Sciences, Department of Mechanics

Roberto TORRES-RODRÍGUEZ

Technical University of Manabi, Faculty of Mathematical, Physical and Chemical Sciences, Department of Mechanics

(*) Corresponding authors:

[email protected] |

Carlos MONTES-RODRÍGUEZ

Abstract

For tagua, the quality of the polishing process is analyzed according to the surface finish of the material, which is obtained manually or through empirically developed machinery that does not include the study of the behavior of the material during the process, which generates an inefficient work. The objective of the work is to determine the macro structural properties of tagua nuts to simulate polishing using the discrete element method. Virtual models were developed and the corresponding physical and mechanical properties were assigned. Among the main results, a tagua nut model was achieved, with m=30.22 g and ρ=1327.3±11.23 kg/m3, friction coefficient for wood of µ_e = 0.411±0.0006 and angle of repose of β=24.644º±0.201º. These properties are the variables used as input data for the DEM model. Finally, the suitability of the Hertz-Mindlin model to simulate the process of mechanized polishing of tagua nuts is demonstrated.

Abstract in Spanish; Castilian

Para la tagua, la calidad del proceso de pulido se analiza en función del acabado superficial del material, el cual se obtiene manualmente o a través de maquinaria desarrollada empíricamente que no incluye el estudio del comportamiento del material durante el proceso, lo que genera un trabajo ineficiente. El objetivo del trabajo es determinar las propiedades macro estructurales de las nueces de tagua para simular el pulido mediante el método de elementos discretos. Se elaboraron los modelos virtuales y se asignaron las propiedades físicas y mecánicas correspondientes. Entre los principales resultados, se logró un modelo de nuez de tagua, con m=30.22 g y ρ=1327.3±11.23 kg/m3, coeficiente de fricción para la madera de µ_e = 0.411±0.0006 y ángulo de reposo de β=24.644º±0.201º. Estas propiedades son las variables utilizadas como datos de entrada para el modelo MED. Finalmente, se demuestra la idoneidad del modelo Hertz-Mindlin para simular el proceso de pulido mecanizado de nueces de tagua.

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